[SYCL] protect against possible data corruption cause by std::locale side effect #18578
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std::locale::global() in a user app can impact the SYCL library by side-effect, causing numbers (include hex) to be formatted with commas and periods where we might not expect such. In most cases, our use of std streams is for user facing messages. But in some cases they are used in places where unexpected formatting could cause errors. This PR attempts to shore these places up.